bug 350287 create a webcal protocol handler. r=lilmatt, dmose

calendar/base/src/calProtocolHandler.js

@@ -0,0 +1,92 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Calendar code.
+ *
+ * The Initial Developer of the Original Code is
+ *   Michiel van Leeuwen <mvl@exedo.nl>.
+ * Portions created by the Initial Developer are Copyright (C) 2006
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+function calProtocolHandler() {
+    var ios = Components.classes["@mozilla.org/network/io-service;1"].
+                         getService(Components.interfaces.nsIIOService);
+    this.mHttpProtocol = ios.getProtocolHandler("http");
+}
+
+calProtocolHandler.prototype = {
+    QueryInterface: function cph_QueryInterface(aIID) {
+        if (!aIID.equals(Components.interfaces.nsISupports) &&
+            !aIID.equals(Components.interfaces.nsIProtocolHandler)) {
+            throw Components.results.NS_ERROR_NO_INTERFACE;
+        }
+
+        return this;
+    },
+
+    scheme: "webcal",
+    
+    get defaultPort() {
+        return this.mHttpProtocol.defaultPort;
+    },
+
+    get protocolFlags() {
+        return this.mHttpProtocol.protocolFlags;
+    },
+
+    newURI: function cph_newURI(aSpec, anOriginalCharset, aBaseURI) {
+        var uri = Components.classes["@mozilla.org/network/standard-url;1"].
+                             createInstance(Components.interfaces.nsIStandardURL);
+        uri.init(Components.interfaces.nsIStandardURL.URLTYPE_STANDARD, 
+                 80, aSpec, anOriginalCharset, aBaseURI);
+        return uri;
+    },
+    
+    newChannel: function cph_newChannel(aUri) {
+        // make sure to clone the uri, because we are about to change
+        // it, and we don't want to change the original uri.
+        var uri = aUri.clone();
+        if (uri.scheme == 'webcal')
+            uri.scheme = 'http';
+        if (uri.scheme == 'webcals')
+            uri.scheme = 'https';
+
+        var ios = Components.classes["@mozilla.org/network/io-service;1"].
+                             getService(Components.interfaces.nsIIOService);
+        var channel = ios.newChannelFromURI(uri, null);
+        channel.originalURI = aUri;
+        return channel;
+    },
+    
+    allowPort: function cph_allowPort(aPort, aScheme) {
+        // We are not overriding any special ports
+        return false;
+    }
+}
+